OPTICAL READER DEVICE, TAG FOR USE ON A DISPOSABLE OR REPLACEABLE COMPONENT, OPTICAL DATA VALIDATION SYSTEM AND METHOD FOR OPTICAL DATA VALIDATION

The presented principle relates to an optical reader device, to a tag for use on a disposable or replaceable component, to an optical data validation system and to a method for optical data validation. The optical reader device (1) comprises a sensor unit and a signal processing unit. In particular, the sensor unit comprises a light source (5, 6) and an optical sensor arrangement. The light source comprises (5, 6) at least one light emitting component and is arranged for emitting light. The optical sensor arrangement is arranged for generating a first sensor signal indicative of light emitted from the light source and reflected back from a code marking (7) of a tag to be placed in front of the light source (5, 6) in a determined distance. The optical sensor is further arranged for generating a second sensor signal indicative of light emitted by a photo-responsive taggant of the tag after being excited by the light emitted from the light source (5, 6). The signal processing unit comprises a signal processing unit being arranged to process the first sensor signal and the second sensor signal.